Hesperorthis davidsoni

via iDigBio · CC0 · via iDigBio. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- HesperorthisPBDB
- Diet
- suspension feederPBDB, for Orthida
- Life habit
- epifaunalPBDB, for Orthida
- Motility
- stationary, attachedPBDB, for Orthida
- Vision
- blindPBDB, for Rhynchonellata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At least 7.3 million years on record.
The record covers at least 440.8 Mya to 433.5 Mya. No occurrence read is dated outside 443.1 Mya to 419.62 Mya.
19 occurrences of Hesperorthis davidsoni on record, most of them in the Silurian. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
19 occurrences- Silurian100%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
9 formations
- Attawapiskat Formation4
- Velise Formation3
- Lower Visby Beds Formation2
- Cedar Lake Dolomite Formation · Interlake Group2
- Jaani Formation2
- Pentamerus Formation1
Loading coastlines…
The named rock units Hesperorthis davidsoni has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Hesperorthis davidsoni and its relatives
SilurianWhere Hesperorthis davidsoni and its relatives were recorded in the Silurian.
Found in the same rock
185 taxa- Dalejina phaseola4 sites
- Coolinia pecten3 sites
- Mendacella3 sites
- Apatobolbina2 sites
- Brachyprion (Erinostrophia) walmstedti2 sites
- Craniops2 sites
- Eoplectodonta (Eoplectodonta) transversalis2 sites
- Eospirifer marklini2 sites
- Halysites catenularia2 sites
- Hesperorthis onniensis2 sites
- Leperditia2 sites
- Leptaena (Leptaena) depressa2 sites
- Leptaena (Leptaena) purpurea2 sites
- Megastrophia (Eomegastrophia) acanthoptera2 sites
- Mendacella lata2 sites
- Mendacella uberis2 sites
- Pentamerus (Pentamerus) oblongus2 sites
- Plectatrypa (Plectatrypa) imbricata2 sites
- Stricklandia lens2 sites
- Visbyella visbyensis2 sites
- Zygatrypa exigua2 sites
- Zygospiraella duboisi2 sites
- Acernaspis nanus1 site
- Acidolites1 site
The Paleobiology Database records 14 sites for Hesperorthis davidsoni, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
9 references- Silurian brachiopods Dictyonellida, Strophomenida, Productida, Orthotetida, Protorthida and Orthida from Estonia6
- First Major Appearance of Brachiopod-Dominated Benthic Shelly Communities in the Reef Ecosystem during the Early Silurian3
- Early Silurian brachiopods and biostratigraphy of the Hudson Bay Lowlands, Manitoba, Ontario and Quebec2
- Stratigraphy and palaeontology of the Interlake Group and Stonewall Formation of Southern Manitoba2
- The Upper Valentian brachiopod fauna of Shropshire, part 1: Inarticulata: Articulata, Protremata, Orthoidea2
- Razrez ordovika i silura reki Moiero, Sibirskaya platforma (Ordovician and Silurian sequence of the Moiero River, Siberian platform)1
- A review of Silurian brachiopods from Gotland1
- Silurian Reefs of Gotland1
- A Stratigraphic revision of the lowermost Silurian in the northern east - baltic area1
Each of the 19 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1

Picture of Hesperorthis davidsoni
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Hesperorthis davidsoni was found in Sketchfab.
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itHesperorthis through timeFormations of the SilurianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (deVerneuil 1848)